Service and Accessories Installation Manual for Systemair SAVE VTR 150/B

Quick guide from the manual

The Systemair SAVE VTR 150/B is a ventilation unit configured via the SAVE Touch control panel or a mobile application. Upon first power-up, the mandatory Startup Wizard guides you through setting the menu language, time and date, configuration file import, airflow control type, heater type, and filter change timer. Note that the Startup Wizard is skipped if the SAVE LIGHT control panel is used.

Configuration

The unit features various user modes to manage airflow and temperature:

• Permanent modes: Auto (automatic control based on demand/schedule) and Manual (four speed levels: Off/Low/Normal/High).
• Temporary modes: Holiday, Crowded, Away, Refresh, and Fireplace. These are active for a set period before reverting to the previous mode.
• Digital input functions: Central Vacuum Cleaner and Cooker Hood, which trigger specific airflow settings when activated via external signals.

Temperature settings can be adjusted between 12°C and 30°C. The unit also supports Demand Control for indoor air quality (IAQ) using CO2 and humidity sensors, which automatically adjust airflow based on air quality levels.

Service and Maintenance

The unit requires regular maintenance, including filter replacement and cleaning of fans and heat exchangers. The Service menu, protected by a default password (1111), allows for advanced configuration of inputs, outputs, and control regulation. The main circuit board and connection box are located within the unit, providing terminals for various accessories and sensors.

Troubleshooting

If issues arise, check the following:

• Fans do not start: Check for alarms on the control panel, verify fuses, and ensure fast couplings are connected.
• Reduced airflow: Check for active alarms, ensure the unit is not in defrost mode, verify filter status, and check for clogged ducts or louvres.
• Unit not controllable: Reset by disconnecting mains power for at least 10 seconds and check modular contact connections.
• Low supply air temperature: Check for alarms, verify set temperature, ensure ECO mode is not preventing heater activation, and check if the overheat protection thermostat needs resetting.

Accessories Installation

The unit supports numerous accessories, including:

• Internet Access Module (IAM): Enables remote control via mobile app or computer.
• IAQ Sensors: CO2, humidity, and temperature sensors for demand-controlled ventilation.
• Heaters and Coolers: Electric duct heaters, water heaters, and water coolers.
• Dampers and Pressure Guard: For airflow control and pressure monitoring.
• Control Panels: Multiple panels can be connected using diverting plugs.
• Presence Detectors and Push Buttons: For triggering specific functions.

Detailed wiring and configuration steps for each accessory are provided in the manual, typically requiring connection to the main circuit board or connection board and subsequent configuration in the Service menu.